Posted on Aug 17, 2012

The design incorporates 30-0, 1/4;.. microstrip lines on the input and output. C3, C4, C7, and C8, along with Ll, form a pi network that matches the low-input impedance of the device to 50 0. C5, C6, C9, ClO, and 30-0 transmission line L2 form an output pi network that maximizes power transfer to 50 0. ClO is not always necessary, depending on variations among devices and circuitboard material.

Click here to download the full size of the above Circuit.

Bias is provided by Rl, R2, and Dl. Rl can be optimized, if desired, to adjust the collector idling current.

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